Aqueous humor

The aqueous humor is the liquid that fills the anterior and posterior chambers of the eyeball. It is a transparent liquid secreted by the ciliary body in the posterior chamber, then passes into the anterior chamber throught the pupil, where it is drained throught the iridocorneal angle.

It is involved in the refraction of light and the nutrition of the lens and cornea.

Its drainage plays an important role in maintaining intraocular pressure. Too much or too little pressure can lead to ocular problems. Drainage takes place through ligamentum pectinatum anguli iridocornealis that open onto the spaces of iridocorneal angle, then via fine venules that carry the aqueous humor to the venous plexus of sclera.